摘要 |
A kite for use in a system for extracting energy from the wind comprises: a wing (1) having a roll neutral point or zone when the kite is in flight; a tether (4) coupled directly or indirectly to the wing; a rigid spar arrangement (2); tensile couplings (3) from the spar arrangement to multiple locations on the wing; and an actuator linkage arrangement (6, 7, 10,11) having a length dimension that can be controllably adjusted. The spar arrangement has first and second attachments (8, 5) to the tether, at the first attachment (8) the spar arrangement is fixed to the tether at a location that is above a roll neutral point or zone of the wing, and at the second attachment (5) the spar arrangement is attached to the tether by the actuator arrangement (6, 7, 10, 11) at a location that is below the roll neutral point or zone of the wing. |